To create a warm environment to rise the bread, I preheat the oven to 100°C, and put a bowl of hot water into the oven to keep the oven moisturized. Then, cover the bread with a tower to avoid the bread absorb moist and leave it in the oven (oven continue to turn on at 100°C) with the warm water underneath. 100°C seems hot but the inner temperature of the coconut flour bread will be just nice for the yeast to thrive.